has_many, :through (again)

[johan pretorius]

Hi there,

I've tried the following solution (Rails 2.3.4 and the latest version
of ActiveScaffold), but get an error when trying to edit a record with
multiple associations.

Any ideas would be appreciated.

http://www.mail-archive.com/actives...@googlegroups.com/msg00272.html

ActionView::TemplateError (You have a nil object when you didn't
expect it!
You might have expected an instance of Array.
The error occurred while evaluating nil.<=>) on line #4 of vendor/
plugins/active_scaffold/frontends/default/views/
_form_association.html.erb:
1: <%
2: parent_record = @record
3: associated = column.singular_association? ? [parent_record.send
(column.name)].compact : parent_record.send(column.name).to_a
4: associated = associated.sort_by {|r| r.new_record? ? 99999999999 :
r.id} unless column.association.options.has_key?(:order)
5:
6: associated << column.association.klass.new if
column.show_blank_record? associated
7: -%>

vendor/plugins/active_scaffold/frontends/default/views/
_form_association.html.erb:4:in `sort_by'
vendor/plugins/active_scaffold/frontends/default/views/
_form_association.html.erb:4
vendor/plugins/active_scaffold/frontends/default/views/
_form.html.erb:10
vendor/plugins/active_scaffold/frontends/default/views/
_form.html.erb:2
vendor/plugins/active_scaffold/frontends/default/views/
_update_form.html.erb:44

thanks,

Johan

[johan pretorius]

For the benefit of others that may have the same problem, it turned
out that the current version of ActiveScaffold handles HABTM out of
the box (with a default link table following the Rails convention, eg.
groups_users when dealing with users and groups). And very well, I may
add.

I've given up on has_many, :through for the time being (when using
ActiveScaffold), wasn't really required.